Who owns MAC prefix CC944A?

CC944A is registered to Pfeiffer Vacuum GmbH in the IEEE MA-L registry.

What devices use CC944A?

Any network device with a MAC address starting CC:94:4A was manufactured by or for Pfeiffer Vacuum GmbH.

MA-L · OUI prefix

Pfeiffer Vacuum GmbH

Any MAC address starting CC:94:4A is registered to Pfeiffer Vacuum GmbH in DE.

OUI prefix	CC944A
Vendor	Pfeiffer Vacuum GmbH
Registry	MA-L (24-bit, large block)
Country	DE
Example MAC	CC:94:4A:00:00:00

What this means

The IEEE assigned the MA-L block CC944A to Pfeiffer Vacuum GmbH. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting CC:94:4A, it is Pfeiffer Vacuum GmbH hardware.

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